Valve.



J. W. GAMBLE.

VALVE.

APPLICATION FILED JAN. 24, 1911.

Patented Jan. 21, 1913.

!NVENTOR ATTORNEYS" UNITED OFFICE.

JOSEPH -W. GAMBLE, 0F PHILADELPHIA, QPENNSYLVANIA, ASSIGNOR TO HARRISONSAFETY BOILER WORKS, OF PHILADELPHIA, PENNSYLVANIA. A CORPORATION OFPENNSYLVANIA. 4

Specification of Letters Patent.

Patented Jan. 21, 1913.

Application filed January 24, 1911. Serial No. 604.375.

To 012 'LF/LOIIE, it may concern Be it known that I, Josnrn Y. (ll/alum.a citizen of the United States, residing at Philadelphia, in the countyof Philadelphia and State of Pennsylvania have invented certain new anduseful Improvements in Valves, of which the following is aspecification.

This invention relates to valves and Pill. ticularly to valves of thetype known as haust relief valves and commonly employed in the exhaustlines of steam systems to open and permit the escape of steam if. thepressure within the piping rises too high.

The object of the invention is to effect certain improvements in theconstruction 0 valves of this type to the end that greater safety issecmed. by reducing to a minimum the possibility of the valve failing toopen and relieve against abnormal conditions when the pressure in thesystem exceeds a predetermined amount.

Relief valves in steam systems as a general rule operate only at longintervals; but it is of the greatest importance that they should be incondition to operate and should operate when the conditions arise underwhich their operation to relieve excessive pressure is desired. Duringsuch long intervals, the movable member of a relief valve is very apttobecome stuck to its seat, and as a result, will not move to open thevalve though apressure considerably greater than that for which thevalve was set to open be reached. Such failure of the relief valve toprevent: the existence'of abnormal conditions in the system mightdisturb the operation of the apparatus or even lead to breakage of theparts. This invention is directed to the provision of means for reducing the danger incidentto such sticking of the movable valve-memberand involves the provision of supplemental valve-memberor a pluralit ofsuch members adapted to open in response to a. pressure higher than thatfor which the relief-valve proper is set and when so-npened to allow theescape of steam and thus restor ormal conditions. I have illustrated inthe accompanying drawings two embodiments of the invent-ion which may beemployed.

In these drawings Figure-l is a section of a relief-valve constructed inaccordance with the invention, Fig. 2 is u. sectional detail I l i l I li i l .ing or decreasing the weight 15.

means of suj'ews over an opening provided in the casing 1. On the otherside of the member 5 a post 9 secured thereto and passes through anopening in brace at so as :0 guide the member 5 in its movements. Beyondthe plate 7 the stem 6 has a rack 10 formed thereon and this rack mesheswith a. pinion 11 carried by a shaft 12 which is mounted for rotation inbearings secured to the casing of the valve. On this shaft 12 is a wheel13 having one end of a chain 14 secured thereto, the chain extendingaround a portion ot' the periphery of the Wheel and having an adjustableweight 15 suspended therefrom.

Secured 0n the hub of the valve-member 5 is a spider 19 the arms ofwhich sustain the springs 18 under pressure.

Each arm 19 may have a boss formed thereon provided with a centralopening to receive and guide the stem 21 of the valve disk 17.Thetension that they springs 18 are of such will hold the valvedisks'lr' closed until the pressure within the valve is substantially inexcess of that at which 5 should open. be adjusted within certain limitsby Increas- The opening at-the lower end of the casing l as shown inFig; 1, is the inlet opening of the valve and therefore when the valveis in use there is always apressure upon the valve-member 5 tending toraise it from i s seat. If a certain pressure upon the valvemember 5 isexceeded, this pressure being predetermined by the member 5 should bemoved from its seat,

weight 15, the' valverelief-valve Correction in Letters Patent No.15050338.

turning F-l1nil l3 nnd, rimweight 15 so ll l', eienm liliii'lil esr'npelhi iugh the openopenings 16 ili'ul thus, relieve the nhn firmulpressure eonditione. it. will thus be seen that an;iplenientery mire, orplurality of supplementary ralres, is provided which is called intoaction only when the main valve nieniher fails to open in 1'e5=p011. 0to con dilionb' which h( iilld cause its opening, this upplememury'cnlve heingz' arranged to open only when :1 pressure within the valve.

renehei'l which in isulistentinlly in exeees of that at which the\l\G-n1(l!ll ('L should open.

In Fig.

1?- n stmiewhni. rlitlerent form of with provided with two .ilres I .;IEll." .lCiQ i as; shown in. lfi; t and in ink form oi. reliefniirn theilelli t? of the mlre-meniher 5 extends thro h 2i tulling ho); and ispii'otzilly cor levied to a lever 23 whose end is pirotnlly colon-c tedto it link '24 pivot-ally mounted at it.-, opposite end on the erasingl,

The lerr-r 23 has :1 weight 25 ndjuSlul'ily mounted thereon. ith thisforlnot valve 21 predelernilned pressure within the valve 1 should raisethe valve-member 5 and with itlhe lever Brand weight 25, but if thevulvemember 5 fails to open in response to the prl SUIQ which shouldcause its opening and the pressure within the valve thereafterincreases, the su 'iplemeiitnry valves 17 will be ruined from theirseats so :is'to reestablish normal conditions.

Ila-ring deserihed my invention what; l (claim as new therein and desireto secure hy Letters Patent of the United States is:

relief valve comprising the combination of a casing, n valve-seattherein, a main Valve-member, adjustable yielding means for holding; themember upon its seat except when a. predetermined pressure is exireeded.mid member having .a plurality of openings therethrough, supplementaryrnlve-members each normally closing one of said openings. and springsholding the supplementary vnlvememhers in. position to close saidopenings and yielding to per fmitmovement thereof imaceonipunied bymovementoi the main valve-member when Sailtl predeternnned PI'GSSUI'GLQexceeded and the nnnn valve member does not more, substantially asdescribed. I

This sp riliention signed and witnessed l'l'HS 520th day of January,1911.

JOSEPH W. GAMBLE.

Witnesses:

Ronnn'r G. Currox, V. A'rwoon Meir-size.

[Sean 1 Y- l .--'i I '0' T it In neieby CBILILQI; that in Letters PatentI\o. lfioOd'tiS, granted Januarv 21, 1913, upon the application ofJoseph \V. Gamble, of Philadelphia, Pennsylvania,

l l l i l l i for an improvement in Valves, the. assignee was erroneousli' deserihed and specified as a corporation of Pennsylvania WhereasStI-ltl assigneeshould have been ll described and specified nwpai'ziwrs/rip of Ienngqlrania; and that the -::id Letters Patent shouldhe read with this eorreetion therein that the some may conform to therecord (if the ease in the Patent Otliee.

Signed nd sealed din 25th day of February, A. 1)., 1913.

U. C. 'BlLLlNG- .Auu'ng 6 07/1712'iSSJUN f' Patents.

' relief-valve Correction in Letters Patent No. 15050338.

turning F-l1nil l3 nnd, rimweight 15 so ll l', eienm liliii'lil esr'npelhi iugh the openopenings 16 ili'ul thus, relieve the nhn firmulpressure eonditione. it. will thus be seen that an;iplenientery mire, orplurality of supplementary ralres, is provided which is called intoaction only when the main valve nieniher fails to open in 1'e5=p011. 0to con dilionb' which h( iilld cause its opening, this upplememury'cnlve heingz' arranged to open only when :1 pressure within the valve.

renehei'l which in isulistentinlly in exeees of that at which the\l\G-n1(l!ll ('L should open.

In Fig.

1?- n stmiewhni. rlitlerent form of with provided with two .ilres I .;IEll." .lCiQ i as; shown in. lfi; t and in ink form oi. reliefniirn theilelli t? of the mlre-meniher 5 extends thro h 2i tulling ho); and ispii'otzilly cor levied to a lever 23 whose end is pirotnlly colon-c tedto it link '24 pivot-ally mounted at it.-, opposite end on the erasingl,

The lerr-r 23 has :1 weight 25 ndjuSlul'ily mounted thereon. ith thisforlnot valve 21 predelernilned pressure within the valve 1 should raisethe valve-member 5 and with itlhe lever Brand weight 25, but if thevulvemember 5 fails to open in response to the prl SUIQ which shouldcause its opening and the pressure within the valve thereafterincreases, the su 'iplemeiitnry valves 17 will be ruined from theirseats so :is'to reestablish normal conditions.

Ila-ring deserihed my invention what; l (claim as new therein and desireto secure hy Letters Patent of the United States is:

relief valve comprising the combination of a casing, n valve-seattherein, a main Valve-member, adjustable yielding means for holding; themember upon its seat except when a. predetermined pressure is exireeded.mid member having .a plurality of openings therethrough, supplementaryrnlve-members each normally closing one of said openings. and springsholding the supplementary vnlvememhers in. position to close saidopenings and yielding to per fmitmovement thereof imaceonipunied bymovementoi the main valve-member when Sailtl predeternnned PI'GSSUI'GLQexceeded and the nnnn valve member does not more, substantially asdescribed. I

This sp riliention signed and witnessed l'l'HS 520th day of January,1911.

JOSEPH W. GAMBLE.

Witnesses:

Ronnn'r G. Currox, V. A'rwoon Meir-size.

[Sean 1 Y- l .--'i I '0' T it In neieby CBILILQI; that in Letters PatentI\o. lfioOd'tiS, granted Januarv 21, 1913, upon the application ofJoseph \V. Gamble, of Philadelphia, Pennsylvania,

l l l i l l i for an improvement in Valves, the. assignee was erroneousli' deserihed and specified as a corporation of Pennsylvania WhereasStI-ltl assigneeshould have been ll described and specified nwpai'ziwrs/rip of Ienngqlrania; and that the -::id Letters Patent shouldhe read with this eorreetion therein that the some may conform to therecord (if the ease in the Patent Otliee.

Signed nd sealed din 25th day of February, A. 1)., 1913.

U. C. 'BlLLlNG- .Auu'ng 6 07/1712'iSSJUN f' Patents.

